Which two statements are correct regarding FortiGate HA cluster virtual IP addresses? (Choose two.)

Which two statements are correct regarding FortiGate HA cluster virtual IP addresses? (Choose two.)

A. A change in the virtual IP address happens when a FortiGate device joins or leaves the cluster. B. Virtual IP addresses are used to distinguish between cluster members. C. Heartbeat interfaces have virtual IP addresses that are manually assigned. D. The primary device in the cluster is always assigned IP address 169.254.0.1.